Men value things in three ways: as useful, as pleasant or sources of pleasure, and as excellent, or as intrinsically admirable or honorable.

All genuine learning is active, not passive.

Angels are able to know and understand better than the human intellect can, precisely because such knowledge and understanding comes to them by way of ideas infused in them by God.

Love wishes to perpetuate itself. Love wishes for immortality.

You have to allow a certain amount of time in which you are doing nothing in order to have things occur to you, to let your mind think.

... always keep in mind that an article of faith is not something that the faithful assume. Faith, for those who have it, is the most certain form of knowledge, not a tentative opinion.

Conjugal love, or the friendship of spouses, persists after sexual desires have weakened, withered, and disappeared.